Shock-absorber.



D. HARTLEY.

SHOCK ABSORBBR. APPLICATION FILED MAY 4, 1912.

Patented Nov. 12, 1912.

D. HARTLEY.

SHOCK ABSORBER.

APPLIGATION FILED MAY 4, 1912.

Patented Nov. 12, 1912.

. scribed herein and illustrated in the accom- DELBERT HARTLEY, OF LOS ANGELES,' CALIFORNIA.

sHocK-Aiasomann.

Speciicationof Letters Patent.

Patented Nov. 1 2. 1912.

Application mea May 4, 11512. serial No. 695375.

To all whom. t may concern:

Beit known that I, DELBERT HARTLEY, a citizen of the United States, residing at the citv of Los Angeles, county of Los A.ngeles,

My invention relates primarilyto a shock absorber for lautomobiles and the object thereof is to produce an efficient' shock ab- .sorber which will 'reduce the jar incident to going over an obstruct-ionor into a depression and will' also reduce the rebound of the body of the vehicle from the samecauses. I accomplish 4this object by the device de- -panying drawings forming a part'hereof,

.in which:

Figure 1 is a section on the line 1-1 of Fig. 2. Fig. 2 is a section on the line 2 -2 of Fig. 1 with the springs omitted. Fig. 3 is a section on the line 3-3 of Fig. 1.` Fig. 4 is an inner end elevation of a closurecap. Fig. 5 is a perspective view of the control portion of my device with the springs omitted. Fig. 6 is an eleva-tion of the rear axle and a portion of the body ofthe alltomobile with my device attached thereto.

In vthe drawings 10 is-a tubular casing to the endsv of which are securely fastened caps 11 and 12 preferably being secured bv screws 13. Cap 11 has a central apertur`14 therein through which passes a shaft' 15. The other end of shaft 15 passes into a central socket 16 in cap 12. Caps 11 and 12 have on their outer edges oppostely disposed inwardly projecting holding lugs 17 the faces of which are preferably provided with bar positioning sockets 18. Resting against these lugs and extending from cap to cap are the abutment bars 19 which have studs which enter the sockets -18 of the lugs and hold the hars properly positioned when in a state of rest. Equally spaced from the abutment bars are channel shaped spring bars 21. In the drawings I have shown three of .these spring bars as I prefer that number. The opposed faces of these spring bars andthe abut-ment bars are parallel and when arranged as shown in' the drawings these faces are at an angle of 45 degrees to the radius of the casing which passes through the center of arms 24. Between the opposed faces are compression springs 22 '1rranged in circumferentially disposed sets.

I have'shown four sets of these springs but any desired number may be used depending upon the size of the springs and the length of the casing( These spring bars and the abutment bars are provided with spring holdin lugs 23 which project from t-he faces t-hereo into-the ends of the springs to hold the springs from slipping. The spring bars are provided near the ends with arms 2l whose inner ends are lprovided with hubs 25 through which is loosely passed shaft 15 when the parts are assembled. An abutment blade 26 of lthe same shapeas the spring'bars lies between the abutment bars and in contact therewith and is provided with an arm 27 the inner endof which terminates in a hub 28 which is keyed to shaft 15.' The 'outer end of shaft; 15 carries anoperat-ing lever 29 which is securely fastened to the shaft. The outer end is provided with an elongated aperture '30 through which passes a bolt 31 which also passes through bearings .32 fastened upon a Atruss rod 33 mounted upon the vrear axle of the machine. The casing 10 is fastened tothe car body 35 by having its ends bolted to the car body in such manner that when the nuts on the bolts are tightened the casing is held from turning. Between the ends of the strap and between'the casino and the car body is a supporting block 3 In the assembling of lny device the abutment blade andv the spring bars are threaded upon sha-ft 15. The springs are then placed in position and the parts placed in the casing. The end caps are then secured to the casing. The operating lever is then secured to the bearing on the struty rod with an equal play up and down. The casing will be understood that the springs arel put in preferably under tension.

Should a car equipped with my device run over an obstruction or into a depression the firstshock causes the body to approach nearer the axle. This movement is resisted by the springs in the casing. As soon as the body has been'returued by the springs to the normal position the inertia of the body causes it to rise above its normal position which is .the rebound movement. This reahsorher. It will be observed that the salue springs are compressed by each movement. l This is rendered possible by the abutment a strap 36 of metal passed around it andI is then secured to the body of the car. It'

bound is opposed by the springs of the shock I' nient bjr the lugs on the caps whileI the abut- .ning gear is the other niain part but it is 2. A shock absorber comprising a tubular casing; end caps secured to said casing7 one f said caps having a cent-ral socket and the other a central aperture; oppositely disposed holding lugs on said caps, said lugs projectingtoward each other; abutment bars normally resting against said lugs; an operating shaft mounted in said socket and eX- tending through said aperture; spring bars having arnis terminatingin hubs movably mounted on said'shaft; a. plurality of circumferentially disposed sets of compression springs arranged between said bars an bar on ontl side being prevented from movement bar on the other side is carried away from the lugs4 by the abutment blade.

I have dest 'ad my shock absorber' as applied to an automobile in which the body Vof the car is'onc of the ma' in parts and the runeq'ually adapted to any other vehicle where there is a spring connection between the body and the running gear. Y

Having' described n-iy invention what 1. claim is:

l. A shock absorber wmprising a casing I adjustably secured to one of the main parts i ina hub said hub being rigidly secured upon of a vehicle; a plurality of compression said shaft; means to adjustably secure said springs within said casing, said springs becasing to the body of the vehicle; an operating circuniicrentiall)v arranged in said casg ing' lever rigidly secured to said shaft; and ing; an abulnient secured to said casing, i means to movably connect said lever to said abutment being adapted to hold one of running gear of the vehicle. the opposed ends of said springs agaiust Inwitness that I claim the foregoing l i' i increment in a direction toward said abuthave hereunto subscribed my name this :oth ment when power is applied to the other end day of April, 1912.

of the springs to-conngress the springs; and Y.. a v means to compress said springs by pushing DELBERT HAI l 's' L the ends thereof away from the abutment, said compression means being connected to the other main part of thevehicle.

Witnesses:

G. E. HARPHAM, FRANK VATERFIELD.

Copies of this patent may be` obtained for ve cents each, by addressing the Commissioner of Patents.

- Washington, D. C.

the'

abutment blade having an arm terminating" 

